I have a C6400 with 4x C6420s.  I am trying to connect a physical console to the mini-DP, but I am unable to get a signal.   I have tried a miniDP to VGA (active) and a miniDP to HDMI with no luck.  I have tried connecting before powering on the sled, and connecting after power has been on for a few minutes.

Is this a Dell specific dongle or should this work with any miniDP connectors? 

Thank You